Dynamical mass generation in unquenched QED using the Dyson-Schwinger equations

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dc.contributor.authorKlzllersü, A.
dc.contributor.authorSizer, T.
dc.contributor.authorPennington, M.
dc.contributor.authorWilliams, A.
dc.contributor.authorWilliams, R.
dc.date.issued2015
dc.descriptionPublished 13 March 2015
dc.description.abstractWe present a comprehensive numerical study of dynamical mass generation for unquenched QED in four dimensions, in the absence of four-fermion interactions, using the Dyson-Schwinger approach. We begin with an overview of previous investigations of criticality in the quenched approximation. To this we add an analysis using a new fermion-antifermion-boson interaction ansatz, the Kızılersü-Pennington (KP) vertex, developed for an unquenched treatment. After surveying criticality in previous unquenched studies, we investigate the performance of the KP vertex in dynamical mass generation using a renormalized fully unquenched system of equations. This we compare with the results for two hybrid vertices incorporating the Curtis-Pennington vertex in the fermion equation. We conclude that the KP vertex is as yet incomplete, and its relative gauge variance is due to its lack of massive transverse components in its design.
dc.description.statementofresponsibilityAyşe Kızılersü, Tom Sizer, Michael R. Pennington, Anthony G. Williams, and Richard Williams
dc.identifier.citationPhysical Review D: Particles, Fields, Gravitation and Cosmology, 2015; 91(6):065015-1-065015-17
dc.identifier.doi10.1103/PhysRevD.91.065015
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.orcidWilliams, A. [0000-0002-1472-1592]
dc.identifier.urihttp://hdl.handle.net/2440/100599
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/LX0776452
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0558878
dc.rights© 2015 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevd.91.065015
dc.titleDynamical mass generation in unquenched QED using the Dyson-Schwinger equations
dc.typeJournal article
pubs.publication-statusPublished

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